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The Decibel Scale
Gives an approx of human perception of loudness. This is because the human ear has a logarithmic response to changes in sound level...more

Good Hearing?
A typical person with good hearing can hear from about 20Hz to 20kHz (the audio bandwidth). A person's voice will usually range from 500Hz to 2kHz...more
Part L1B
Conservation of fuel and power in Existing Dwellings

Wrexham - Air Flow Rate Testing - 01978 633 079
The office that covers this area is: Wrexham
Phone Number: 01978 633 079 Email: wrexham@e2consultants.co.uk
Our other services include:
Air Flow Rate Testing can also be known as:
Part F Testing, Duct Testing, Part F Ventilation Testing, Part F Fan Testing, Ventilation Testing Equipment, Ventilation Commissioning Certificate, Part F Ventilation Certificate,


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